Puking during sex ?

I’m supposed to start my period today I haven’t, it’s 4:31 am where I’m at , so I usually start when I wake up, but me and my boyfriend were having sex and he asked for head more than once and for some reason I had an gut feeling to say no.. i had also told him he hurt my stomach (my stomach hurt but I didn’t put to much into it, but I don’t get sick ever ) so we skip forward and he’s on top and I know I’m getting sick and I push him off on me & I sit up and that’s when I throw up all in my hand and I try to make it to the bathroom and obviously didn’t 😫 puking for me is not normal, I only do it after I drank alcohol, entirely to much 😂 I haven’t drank today? Somebody pls tell me why I could have throw up, I puked everything I ate earlier 🥺 I haven’t recently ate either!! The last time I ate was like around 9:30ish, it’s been about 8 hours later ..